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piranha

American  
[pi-rah-nuh, -ra-, -nyuh] / pɪˈrɑ nə, -ˈræ-, -njə /

noun

  • piranhas,
    plural
  • piranha
    plural
  1. any of several small South American freshwater fishes of the genus Serrasalmus that eat other fish and sometimes plants but occasionally also attack humans and other large animals that enter the water.


piranha British  
/ pɪˈrɑːnjə /

noun

  1. any of various small freshwater voracious fishes of the genus Serrasalmus and related genera, of tropical America, having strong jaws and sharp teeth: family Characidae (characins)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms


Etymology

Origin of piranha

1865–70; < Portuguese < Tupi


Explanation

A piranha is a fish with famously sharp teeth. Don't go swimming in certain South American rivers if you want to avoid piranhas! These freshwater fish are terrifyingly described as "voraciously carnivorous," meaning they eat meat with great enthusiasm. Humans aren't often bitten by piranhas, but it does happen in some parts of South America. You also can't buy a piranha as a pet in many parts of the world — and if you do, it's best not to get two of them, since the weaker fish is often killed by the stronger one.

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Vocabulary lists containing piranha

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

In August 2024, Banksy painted piranha fish on a City of London Police sentry box.

From BBC ● Aug. 8, 2026

As Richard, the deceased father of Jenna Ortega’s Astrid Deetz, Santiago Cabrera got a combination of prosthetics and makeup for the puppet piranha fish biting at his face, neck and body.

From Los Angeles Times ● Sep. 12, 2024

White once said her character Sue Ann Nivens in “The Mary Tyler Moore Show” could be “icky-sweet” but was “really a piranha type.”

From Washington Times ● Dec. 31, 2021

It becomes a big floaty bullfight, or — with enough players — a piranha feeding frenzy.

From The Verge ● Oct. 14, 2021

He dreamed the ants crawling all over his hummingbird feeder and clogging it with their bodies were a special kind of Milagro piranha ant.

From "The Milagro Beanfield War" by John Nichols

It comes a day after painted swimming piranhas on to a City of London Police sentry box, which was first spotted on Sunday morning.

From BBC ● Aug. 12, 2024

We paddled through flooded forests looking for anacondas and fished for piranhas along a small creek.

From New York Times ● Apr. 26, 2023

"We're on an island and pieces are being chipped away by piranhas in the water," he said.

From Salon ● Jan. 10, 2023

Known as vegetarian piranhas, pacu can reach up to 1 meter long.

From Science Magazine ● Jan. 4, 2023

“No doubt it would be a grand adventure,” she interjected, for she had no wish to dream about flesh-eating piranhas that night; the murderous pheasants had been bad enough.

From "The Unseen Guest" by Maryrose Wood

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